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LOT OF 10 - Dell 1P7DP ST2000NM0023 2TB 7200RPM 6Gbps 3.5" SAS SERVER Hard Drive
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  • $950.00 
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Synology 12 Bay Expansion Unit DX1215 (Diskless)
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  • $747.99 
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WD HUH721212AL4200 HGST DC HC520 12TB SAS 12Gbps 7.2K 256MB 3.5" Hard Drive
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Refurbished WD HUH721212AL4200 HGST DC HC520 12TB SAS 12Gbps 7.2K 256MB 3.5" Hard Drive
  • Brand: Western Digital
  • Capacity: 12TB
  • RPM: 7200 RPM
  • Interface: SAS 12Gb/s
  • Model #: HUH721212AL4200
Seagate BarraCuda 7200.9 ST3500641AS-RK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Retail Kit
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Seagate BarraCuda 7200.9 ST3500641AS-RK 500GB 7200 RPM 16MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Retail Kit
  • Height (maximum): 22.23mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.05mm
  • Model #: ST3500641AS-RK
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  • $141.10 
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Seagate Exos X18 ST14000NM000J 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
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Seagate Exos X18 ST14000NM000J 14TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drives
  • Average Latency: 4.16ms
  • NAND Flash Memory Type: Hard Drive
  • Height (maximum): 26.10mm
  • Width (maximum): 101.85mm
  • Model #: ST14000NM000J
Dell 4N6CY 4TB 7.2k sata 6gbps 3.5in Hot Plug  hard drive
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  • $100.00 
WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD4003FZEX
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WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6Gb/s 64MB Cache 3.5 Inch - WD4003FZEX
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 147.00mm
  • Model #: WD4003FZEX
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Seagate 4KN 6 TB 3.5" Internal Hard Drive ST6000NM0014 (ST6000NM0014)
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  • $347.45 
Dell CXKCK - 500GB 7.2K SATA 2.5Inch Hard Drive
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  • $24.13 
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WD1600AAJS Western Digital U717D 160GB 7200RPM 3Gbps 3.5" SATA Hard Drive
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  • $48.95 
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ST4000NM0023 4TB 7.2K SAS 3.5" 6G HDD for Dell T620 T630 T640 T710
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  • $174.95 
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HGST Ultrastar 7K6000 HUS726060ALE610 (0F23001) 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
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HGST Ultrastar 7K6000 HUS726060ALE610 (0F23001) 6TB 7200 RPM 128MB Cache SATA 6.0Gb/s 3.5" Enterprise Hard Drive Bare Drive
  • Average Seek Time: 7.6ms
  • Average Write Time: 8ms
  • Average Latency: 4.16ms
  • Height (maximum): 26.10mm
  • Model #: 0F23001
MaxDigital 4TB 7200RPM 64MB Cache SATA III 6.0Gb/s (Surveillance CCTV DVR Storage) 3.5" Internal Hard Drive w/2 Year Warranty
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MaxDigital 4TB 7200RPM 64MB Cache SATA III 6.0Gb/s (Surveillance CCTV DVR Storage) 3.5" Internal Hard Drive w/2 Year Warranty
  • Parts: 2 Year Warranty from Reseller
  • Labor: 2 Year Warranty from Reseller
  • Model #: MD4000GBDS-CCTV
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  • $129.99 
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WD Ultrastar DC HC560 0F38785 20TB Hard Drive 512MB Cache 7200 RPM SATA 6.0Gb/s 512E SE NP3 3.5" Internal HDD (WUH722020BLE6L4) - OEM
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WD Ultrastar DC HC560 0F38785 20TB Hard Drive 512MB Cache 7200 RPM SATA 6.0Gb/s 512E SE NP3 3.5" Internal HDD (WUH722020BLE6L4) - OEM
  • Average Latency: 4.16ms
  • Recording Technology: CMR
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Model #: 0F38785
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Dell Xy986  2Tb 7200Rpm Near Line Sas 12Gbps 128Mb Buffer 2.5Inch Hard Drive With Tray For Poweredge Server.Brand New Xy986
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Dell 6W3V5 600 GB Hard Drive - 2.5" Internal - SAS (12Gb/s SAS) - 3.5" Carrier
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Dell JY57X - Dell 1.8TB 2.5" SAS 10K 12Gb/s Hard Drive
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DELL
Dell JY57X - Dell 1.8TB 2.5" SAS 10K 12Gb/s Hard Drive
  • NAND Flash Memory Type: SLC
  • Model #: JY57X
WD RE WD1003FBYX 1 TB 3.5" Internal Hard Drive
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Western Digital
Refurbished WD RE WD1003FBYX 1 TB 3.5" Internal Hard Drive
  • Brand: Western Digital
  • Series: RE
  • Capacity: 1TB
  • RPM: 7200 RPM
  • Model #: WD1003FBYX-RF
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  • $39.99 
Toshiba MG10 20TB SATA 6Gb/s 7200RPM 3.5" Enterprise HDD - MG10ACA20TE
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Toshiba MG10 20TB SATA 6Gb/s 7200RPM 3.5" Enterprise HDD - MG10ACA20TE
  • Part Number: MG10ACA20TE
  • Usage: For Enterprise Storage
  • Model #: MG10ACA20TE
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Seagate Skyhawk 6TB Video Internal HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for  (ST6000VX009)
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Seagate
Seagate Skyhawk 6TB Video Internal HDD – 3.5 Inch SATA 6Gb/s 256MB Cache for (ST6000VX009)
  • NAND Flash Memory Type: Hard Drives
  • Height (maximum): 26.10mm
  • Width (maximum): 101.60mm
  • Length (maximum): 146.99mm
  • Model #: ST6000VX009
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HGST Ultrastar He6 HUS726060ALS640 (0F18370) 6TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
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HGST Ultrastar He6 HUS726060ALS640 (0F18370) 6TB 7200 RPM 64MB Cache SAS 6Gb/s 3.5" Helium Platform Enterprise Hard Drive Bare Drive
  • Average Seek Time: 8.5ms
  • Height (maximum): 26.1mm
  • Width (maximum): 101.6(+/-0.25)mm
  • Length (maximum): 147mm
  • Model #: 0F18370
ST6000NM0034 Seagate 6TB 7.2K 12G 128MB 3.5in SAS Hard Drive 1HT27Z-001
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  • $150.00 
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Desktop internal hard drives store operating systems, system files, software and individual files. They can offer anywhere from 500GB of storage up to 8TB or more and come with a variety of interfaces. Although most internal drives are 3.5in., some devices use a smaller 2.5in. form factor. Smaller and larger physical sizes are rare but do exist. Also, consider the speed of the drive. Internal hard drives for desktop computers tend to run at 7,200 revolutions per minute (RPM) but faster read-write speeds minimize waiting time. Hard drives with speeds of up to 15,000 RPM are available. Finally, memory cache is the amount of memory that can be active at any given time. A larger cache is important if you work with multiple large files at once.

Improve Your Computer's Performance with a New Hard Drive

You might not be concerned about storage space when you buy a new PC, but the hard drive will fill will with files and software. A new desktop internal hard drive can replace an existing drive that has reached maximum capacity. Alternatively, if your motherboard has a spare bay, you can add a second or additional device to expand storage. An internal HDD for PCs is easy to install, has greater capacity and speed than an external device and comes with multiple storage options.

Store All Your Data with Large Capacity Drives

Every piece of software you install, every song you save, every video you download takes up storage space, which can slow down a computer. A 720p movie takes up approximately 8GB, while a 4k video can consume as much as 100GB of a desktop internal hard drive. Even the Windows 10 operating system requires 15GB. A 500GB hard drive can be useful for storing files while you're on the move before transferring them to a larger drive if you don't have a personal cloud device or portable hard drive. For everyday and ongoing storage, this size drive will quickly fill up. Desktop internal hard drives offer the storage of up to 16TB in some cases, providing plenty of space for software and files.

Ensure Compatibility by Choosing the Right Interface

The most commonly used standards for connecting a desktop internal hard drive to a motherboard are SATA and SAS. Determine the motherboard's interface and ensure that you match this when buying a new drive to ensure compatibility and to avoid having to use an adapter. Check the label off the drive you are replacing or look at the manufacturer guidelines for your motherboard.

Access Data Quicker with a Fast SATA Internal Hard Drive

The speed the disk platters spin determines how quickly information can be retrieved from the drive. It is common for external hard drives to have a speed of 5,000 RPM because this draws less power and makes minimal noise. Other hard drive designs have a speed of up to 15,000 RPM, depending on the model.

Bestselling Desktop Internal Hard Drives Reviews:

Keith V.
4/9/2026 4:20:16 PM
High Capacity Plug and Play Drive

“ SATA so it plugs right into my old media server ”

Seagate BarraCuda ST24000DM001 24TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive Bare Drive
Perry K.
3/26/2026 7:05:57 AM
Seagate Barracuda 2TB Hard Drive

“ Received and installed new Seagate Hard Drive in older Dell Inspiron PC. ”

Seagate BarraCuda ST2000DM008 2TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" Hard Drive Bare Drive
Anonymous
1/17/2026 7:23:35 PM
Works great if not DOA

“ I initially purchased two drives to replace two old WD 6TB drives (one died before Xmas) in a WD NAS. ”

WD Red Plus 10TB NAS Hard Disk Drive - 7200 RPM Class SATA 6Gb/s, CMR, 512MB Cache, 3.5 Inch - WD100EFGX